Nailing machine



Oct. 10, 1950 w. A. BELL 2,525,637

NAILING MACHINE Filed Oct. 1, 1948 5 Sheegs-Sheet 1 Will [am A Bell IN VENTOR.

Oct. 10, 1950 w. A. BELL 2,525,637

NAILING MACHINE Filed 001-1, 1949 3 Sheets-Sheet 2 /4 William A. Bell I N VENTOR.

Oct. 10, 1950 Filed Oct. 1.194s

W- A. BELL NAILING MACHINE 3 Sheets-Sheet 3 William A B ell INVENTOR.

Y (Wang 8% Patented Oct. 10, 1950 OFFICE NAILING momma William A. Bell, El Dorado, Ark.

Application October 1, 1948, Serial No. 52,316

This invention relates to new and useful improvements in nail driving machines and the primary object of the present invention is to provide a nailing machine for driving and setting nails in the tongue and grooved boards of floor boards.

Another important object of the present invention is to provide a nailing machine including a driving member and embodying novel and improved means for retaining the same in a locked position after the same has driven a nail and for releasing said retaining means whereby the driving member will return to its normal position for the next operation.

Yet another object of the present invention is to provide a nail-driving machine including a novel and improved feeding mechanism for supplying nails, one at a time, to a delivery chamber whereby the same will be ejected by a driving member. A

Another feature of the present invention is to provide a nailing machine including a nail receiving chamber, and means for retaining a nail in said chamber until such time as a driving member engages and forces the nail therefrom.

Another feature of the present invention is to provide a conveyor for supplying nails to a delivery chamber and embodying means for holding and retaining a group of nails relative to the conveyor.

Another feature of the present invention is to provide a nail driving machine including a driving member which is actuated manually to effectively drive nails into fibrous materials, a locking mechanism for holding the driving member in a fixed position after the same has driven a nail, and novel and improved manually or electrically operated means for releasing the locking mechanism.

A further object of the present invention is to provide a nailing machine including a feed conveyor for supplying nails to a chamber where the same are to be discharged by a driving member, and manually operable means for rotating said conveyor in a step-by-step movement.

A still further aim of the present invention is to provide a nail driving machine of the aforementioned character that is simple and practical in construction, strong and reliable in use, eiilcient and durable in operation, small and compact in structure, neat and attractive in appearance, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the de- 2 Claims. (Cl. 1-46) tails of construction and operation as more fully hereinafter described and claimed, reference being had to the accom anying drawings forming part hereof, wherein ike numerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view of the nail driving machineconstructed in accordance with the present invention;

Figure 2 is a top plan view of the present invention, and with parts of the slidable closure broken away and shown in section and showing the closure moved to permit supplying the magazine with nails;

Figure 3 is a bottom plan view of the present invention;

Figure 4 is a side elevational view of the present invention and showing the same in use;

Figure 5 is an enlarged longitudinal vertical sectional view taken substantially on the plane of section line 5--5 of Figure 2;

Figure 6 is an enlarged transverse vertical sectional view taken substantially on the plane of section line 6-5 of Figure 5;

Figure 7 is a fragmentary perspective view oi the conveyor used in conjunction with the present invention;

Figure 8 is an enlarged fragmentary, horizontal, longitudinal sectional view taken substantially on the plane of section line 8-8 of Figure 1;

Figure 9 is an enlarged transverse vertical sectional view taken substantially on the plane of section line 5-9 of Figure 1;

Figure 10 is an enlarged transverse vertical sectional view taken substantially on the plane of section line Ill-it of Figure 1;

Figure 11 is an enlarged fragmentary elevational view illustrating the conveyor mechanism and the actuating means therefor; and,

Figure 12 is a horizontal sectional view taken substantially on the plane of section line IVE-l2 of Figure ll.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral it represents an elongated substantially rectangular body or housing having a hand grip it integrally formed therewith at one end.

A substantially rectangular drive head or casing M is integrally formed with the body Ill and includes a removable wall or closure It that is secured to the casing 114 by fasteners l8, and an upper wall 2|] is provided with an adjustable plunger stop 22.

The upper portion of the head I4 is provided amass? 3 with an axial, substantially rectangular, opening or bore 2 3 that registers with an opening 26 in the upper wall 20.

An elongated, substantially rectangular, driving member 23 of strong, durable material such as steel, is slidably mounted in the bore 24 and opening 26 and supports a removable hammer engaging cap 30 at its upper end. A tool or nail driver 82 is fixed to or forms an integral part of the member 28 and the free end of the driver 32 is provided with a concaved recess conforming to the head portion 36 of a nail 3%.

A further axial bore or chamber iii is provided in the lower portion of the head it and slidably receives the driver 32 when the member 28 is driven inwardly of the head i l.

Spaced parallel to the bore 2 3, is a substantially cylindrical recess 52 in which there is disposed a coil spring 3 2. A longitudinal slot it provided between the recess 42 and bore 26 slidably receives a detachable lug 38 carried by the member 28 that bears against the spring i l. The spring ti l normally urges th member 28 outwardly of the bore 2%, and the lug lt engages the stop 22 to limit the upward or outward sliding movement of the member 28 relative to the head i l. The head id is provided with an opening 6% that registers with the lug 58, when the member 28 is raised, to permit removal of the lug 48 from the member 28 by a tool inserted through the opening 58a, and into a suitable kerf in the lug 48.

The housing it is provided with'a pair of spaced parallel passages which are separated by a longitudinal portion forming an integral part of the housing iii. The partition 52 terminates adjacent the chamber til to provide a recess for a first roller or cylindfical post 56 having reduced end portions or trunnions 58 that rotatably engage recesses 6G and 62 provided in the head id and a detachable plate or foot 6 3 carried by the head M, respectively.

A second cylindrical post 663 is dis sed in the housing it, adjacent the hand grip i2 and the rear end of the partition 52, and includes reduced end portions t8 that are rotatably received in sockets iii provided in the housing.

The numeral l2 represents the conveyor or endless feeding member that is used in conjunction with the present invention generally. This conveyor includes a plurality of substantially rectangular and similar links M each of which are provided with spaced knuckles it and 18 on eac longitudinal edge. The knuckles or leaves it being staggered relative to the knuckles or leaves it so that pivot pins 8d will connect the interdigitated knuckles of adjacent links. as shown best in Figure 7 of the drawings. The knuckles l6 and 18 project outwardly from the inner faces of the links M, and are aligned and rounded to engage longitudinally disposed, circumferentially spaced recesses or grooves 82 provided in the outer periphery of the cylindrical posts whereby the conveyor 1'2 will be rotated with and by the posts.

Rigidly attached to or forming an integral part of the outer face of each link "it, is one longitudinal edge of an arcuate nail embracing and holding plate or strip 80.

Pivotally mounted in the head M, is a bellcrank lever 86 one leg of which is connected to a pitman 88 that extends from a pivotal dog or pawl 90 mounted in and pivoted to the head M, as shown best in Figure of the drawings.

A resilient member or spring 92 is anchored to the head I4 and the bell-crank lever to normally urge the pitman 88 upwardly and dog 90 into locking engagement with a rack bar 34 provided on one face of the member 28. It should be noted, that the dog 90 and rack bar 94 are so arranged as to permit the member 28 to move inwardly of the head I4, however, the same will lock the member 28 inwardly of the head and the driver 32 in the chamber 40 until the said dog 90 is released from engagement with the rack bar 84.

In order to release the dog 90 from the rack bar 94, there is provided an elongated operating lever 96which is spaced relative to the housing it. One end or the lever 96 extends into a recess 98 provided in the head I4 and is pivoted to the free end of the bell-crank lever 86, and the remaining end of the lever 96 is angulated to pivotally engage a trip lever I00 that is pivoted in a recess I02 formed in the hand grip I2.

When the trip lever I00 is'pulled toward the hand grip I2, the pitman 88 will be moved downwardly and the dog 90 will disengage the rack bar 9 Attention is next directed to the mechanism for rotating the post 56 in order to move the conveyor it in a step-by-step manner for delivering nails to the chamber 40; This mechanism comprises a lever I04 that is mounted on the bell-crank lever 86. A pawl I06 is pivotally carried by the lever 06 and engages an annular ratchet or plate I08 having circumferentially spaced recesses or openings IIO that are fixed to the post 56, and a spring member II2 fixed to the lever its bears against the pawl I06 to return and urge the same into a selected one of the openings Mil.

When the lever is pulled rearwardly toward the hand grip l2, to release dog 90 from the rack bar 9t, the lever lot will swing rearwardly and the pawl I06 being pivoted to the lever I04 will swing forwardly, under tension of a spring I I2 mounted on. the lever, to ride upon the plate I08 and will be urged into a recess III! by the spring M2. The lever I04 and pawl I06 will then be in vertical alignment so that as the lever again moves forwardly, under action of the spring 92, a lug M4 on the lever I04 will engage the pawl so that the lever I04 and pawl I06 will swing forwardly in unison to rotate the conveyor I2 to supply a nail to the chamber 40. It being understood that the nail will fall due to its own weight into the chamber 40 when the said nail is aligned with the chamber 40 (see Figures 11 and 5).

The foot or plate 64 is provided with a flat work-engaging face having a groove II6 provided therein adapted. to receive the tongue II8 of a floor board I20. and holds the present invention in position with respect to the tongue II8 during a nail driving operation as shown in Figure 4.

A longitudinal, internally threaded bore I22 is provided in the foot 64 at right angles to the chamber 40 and receivably engages a bolt I24. A plunger I26 having a cam surface I28 is slidable in the bore I22 and is urged by a spring I30 disposed between the plunger I26 and bolt I24 so that the cam surface will be normally disposed in alignment with the chamber 40 to receive the lower end of a nail disposed in the chamber 40.

As the nail in the chamber 40 is driven downwardly by the driver 32, the pointed end of the nail will move the plunger I26 into the bore I22 and the nail is free to enter the tongue H8. The plunger will then return to its normal position to retain the next nail in the chamber 40.

Integrally formed with the wall I6 and at right angles thereto, is an elongated panel I32 forming the upper wall for the housing Ill. The central portion of the panel I32 is provided with a substantially horizontal opening I34 that slidably receives a cover plate drawer I36 having a plurality of openings I38 that will register with openings I40 provided in the panel I32, as the cover plate is moved laterally of the panel I32, so that nails may be inserted into the arcuate strips 84. The cover plate is movable so that the openings I38 will not register with the openings I40 to prevent nails from disengaging the strips 84 while the present invention is in use.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention, the same is susceptible to certain changes iully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A nailing machine comprising a driver head, a'plunger workable in said head, a driver carried by said plunger, a nail receiving chamber provided in said head, means normally retaining a nail in said chamber, means for locking said driver in said chamber, an operating rod for releasing said locking means, and means operable by said operating rod for feeding nails to said chamber.

2. A nailing machine comprising a driver head, a plunger workable in said head, a driver carried by said plunger, a nail receiving chamber aligning said driver and adapted to receive said driver as said plunger is driven into said head, means for locking said driver in said chamber, means for releasing said locking means, means for returning said plunger to its normal position, means for normally retaining a nail in said chamber, means for supplying nails to said chamber, and an operating rod controlling said releasing means and said means for supplying nails to said chamber.

WILLIAM A. BELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 406,075 White July 2, 1889 1,146,105 Sabelman July 13, 1915 2,078,012 Newell Apr. 20, 1937 2,087,668 Heller July 20, 1937 2,430,321 Anstett Nov. 4, 1947 

